Machine for separating gold from sand, &amp;c.



No. 785,819. 7 I PATENTED MAR. 28, 1905. v D G. 0. MICHAELSEN.

MACHINE FOR SEPARATING GOLD FROM SAND, &0 APPLICATION FILED SEPT. 24, 1903.

s SHEETS-SHEET 1.

No. 785,819. PATENTED MAR. 28, 1905. 0. 0. MICHAELSBN. MACHINE FOR SEPARATING GOLD FROM SAND, &o.

APPLICATION FILED SEPT. 24, 1903.

3 SHEETS-SHEET 2.

z'znesses: Inventor.-

a. "By 4 Z Qm L M PATENTED MARr28, 1905. U. 0. MIGHAELSEN. MACHINE FOR SEPARATING GOLD FROM SAND, 8w.

APPLICATION FILED SEPT, 24. 19035 3 SHEETS-SHEET 3.

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Patented March 28, 1905.

CHARLES O.

MICHAELSEN, OF SALT LAKE CITY, UTAH.

IVIAOHINE FOR SEPARATING GOLD FROM SAND, &.0.

SPECIFICATION forming part of Letters Patent 1*: 0. 785.819, dated March 28, 1905.

Application filed September 24, 1903. Serial No. 174,520.

To (all whom it may concern:

Be it known that I, CHARLEs 0. MICHAEL- sun, a citizen of the United States, residing at Salt Lake City, Salt Lake county, State of Utah, ha veinvented anew and useful Machine for Separating Gold from Sand or other Material by Mechanical Means and \Vithout the Use of Mercury or Chemicals, of which the i to which diaphragm is attached overflow-cylinder E, is provided with a cap K, to the center of which cap K is firmly secured annular ball-bearing support a. Resting upon and carried by antifriction steel balls 32 2 &c., is ring J, which is firmly secured to bevel gear-wheel 0 The bevel gear-wheel e is secured on a rotating vertically-adjustable shaft H. The rotary motion of shaft H is imparted by bevel gear-wheel 0 through the featherkey If engaging the converse keyways in wheel 0 and vertical shaft H. The vertical shaft H is suspended from and secured to disk 9' by screw (1 and adjusted vertically by screw q. The lower end of shaft H is firmly attached to a vertical worm-cylinder F, which is vertically adjustable and rotatably movable and provided with ingress-ports m m" and to which worm-cylinder F are firmly attached on the outside concave-convex blades Z (double screws) starting on opposite sides of said worm-cylinder. A funnel Gr is firmly attached to and forms the bottom of worm-cylinder F. Within the lower end of funnel G telescopes discharge-tube 71/, within which dischargetube a telescopes discharge-pipe 7", which discharge-pipe] forms a part of funnel G, being the lower end of said funnel.

The machine is operated by means of power applied to pulley a, which drives bevel gearwheel 0" on horizontal shaft 1, engaging bevel .7". (a part of funnel G.)

gear-wheel on vertical shaft H, which ver tical shaft H hangs from upper ball-bearing support J and is steadied by discharge-tube The distributer D is aided in its work by petticoat-distributers'0' 0 0 attached to its outer side, and is operated by means of clutch-pin 12., attached to vertical shaft H, engaging clutch 72., attached to distributer D. The distributer D rests on ball-bearing support made to receive and hold steel balls 7). The arms 7'? 7 2 is, &e., are firmly attached to j, bottom of funnel G, and bent to conform to the concave bottom B of shell A and are also curved in the direction of the motion of distributer D,as shown in Fig. 4. The concavo-convex screw-blades Z and discharge through the ingress-openings m m into funnel (Jr. The shell A, provided with a concave bottom B, is supported and held in place by ring f and feet P P P, &c. The feet P P, &c. are securely held at bottom by ring B. Attached to bottom B by suitable means is pocket 0, which is provided with tap-off a." and screwtap i and the machine is operated as follows: The pulverized ore or gold-bearing sand is fed into hopper L with enough water to make it free-moving, then onto petticoat-distributers 0 0 (f and distributer D, from which by the rotary motion of D the pulp is evenly deposited in a circle near the upper edge of concave bottom B, where it is caught and gently agitated and drawn to the center by the arms 7r it 71'', &e. hen sufficient pulp has been fed and drawn to fill pocket C, the screw-blades I skim off the top and carry it up and discharge it as tailings through in gress-ports m m, where it is discharged through y" and it, while the agitation by arms l." K &c., the continuous feeding, and the lower discharge-suction through j have concentrated the mineral values in pocket C, where it is drawn off through tap-off 2".

I claim 1. The combination with a vertical shell, built of any suitable material, with a cap, and a concave bottom; ofa rotatably-movable and vertically-adjustable worm-cylinder,provided with two concavo-convex screw-blades, firmly attached on the outside of said cylinder and starting from opposite sides of said cylinder;

said cylinder being provided with ingressports in its wall, and a funnel firmly attached to, and forming the bottom of the worm-cylinder, to which. funnel, are firmly secured, at varying distances, agitating-arms, of suitable length, and bent to correspond with the concave bottom, of the shell, and curved in the direction of the motion of the screw-blades, substantially as described.

2. A vertical shell built of suitable material, with a top, and a diaphragm, and provided with concave bottom, to which is secured a pocket, and tap-off with plug; within which shell, is fitted antifriction-ball-bearing-supported feed-distributer, with petticoat-distributers, and provided with clutch-pin, substantially as described.

3. A vertical shell provided with a feedhopper and a concave bottom, to which bottom is attached a pocket provided with an opening and a closure therefor, distributers within the shell, and provided with clutch, a vertically-adjustable and rotatably-movable shaft, and a cylinder provided with ingressports in its wall, and with a funnel-shaped bottom with agitator-arms curved forwardly and bent to conform with the concave bottom of the shell.

t. The combination of an upright shell, provided with top feed, and bottom discharge, within which shell is operated rotating distributer, with petticoat extensions; and a worm-cylinder, with two concavo-convex screw-blades secured thereon, with means for operating them; the worm-cylinder being provided with ingress-openings in its wall, and a bottom funnel with a discharge-tube, the said shell being provided with a concave bottom, within which is operated agitating-arms, said bottom resting upon a ring-support, that is provided with feet, substantially as described.

5. The combination of a vertical shell, provided with a feed-hopper, and the rotating pulp-distributer, with petticoat extensions, operating within said shell, the vertical shell, being provided with cap and concave bottom, agitating-arms within the concave bottom, said arms being forwardly curved and bent to conform to the concave bottom; a pocket in the concave bottom; a worm-cylinder provided with concave-convex screw-blades, said cylinder having ingress-openings and funneldischarge, a discharge-pipe attached to the" funnel-discharge; a diaphragm within the shell, and an overflow-cylinder attached thereto, substantially as and for the purpose described.

CHARLES O. MIGHAELSEN.

Vitnesses:

P. J. CoNNoLLY, SAM RANEY. 

